package main

import "fmt"

func main() {
	var score int
	fmt.Println("请输入分值：")
	fmt.Scan(&score)
	switch {
	case score >= 90:
		fmt.Println("玩会吧")
	case score < 90 && score >= 80:
		fmt.Println("好好学习")
	case score < 80:
		fmt.Println("玩命学习")
	}

}
